feat(i18n): add i18n

.eslintrc.js

@@ -15,7 +15,7 @@ module.exports = {
     node: true,
     jest: true,
   },
-  ignorePatterns: ['.eslintrc.js'],
+  ignorePatterns: ['.eslintrc.js', 'src/generated'],
   rules: {
     '@typescript-eslint/interface-name-prefix': 'off',
     '@typescript-eslint/explicit-function-return-type': 'off',

nest-cli.json

@@ -3,6 +3,6 @@
   "collection": "@nestjs/schematics",
   "sourceRoot": "src",
   "compilerOptions": {
-    "deleteOutDir": true
+    "assets": [{ "include": "i18n/**/*", "watchAssets": true }]
   }
 }

package.json

@@ -27,6 +27,7 @@
     "@telegraf/session": "^2.0.0-beta.6",
     "better-sqlite3": "^8.7.0",
     "kysely": "^0.23.5",
+    "nestjs-i18n": "^10.3.6",
     "nestjs-telegraf": "^2.7.0",
     "pg": "^8.11.3",
     "reflect-metadata": "^0.1.13",

src/app.module.ts

@@ -1,9 +1,11 @@
 import { Module } from '@nestjs/common';
 import { ConfigModule } from '@nestjs/config';
-import { TelegramModule, UserModule } from './services';
-import { AppUpdate } from './updates';
+import { ReplyModule, TelegramModule, UserModule } from './services';
+import { AppUpdate } from './controllers';
 import { DatabaseModule } from './services';
-import { UserUseCaseModule } from './use-cases/user';
+import { UserUseCasesModule } from './use-cases/user';
+import { ReplyUseCasesModule } from './use-cases/reply';
+import { I18nModule } from './services/i18n/i18n.module';
 
 @Module({
   imports: [
@@ -13,7 +15,10 @@ import { UserUseCaseModule } from './use-cases/user';
     TelegramModule,
     DatabaseModule,
     UserModule,
-    UserUseCaseModule,
+    UserUseCasesModule,
+    ReplyModule,
+    ReplyUseCasesModule,
+    I18nModule,
   ],
   controllers: [],
   providers: [AppUpdate],

src/controllers/app.update.ts

@@ -0,0 +1,55 @@
+import { Command, Ctx, Hears, Help, Start, Update } from 'nestjs-telegraf';
+import { Context } from 'src/core';
+import { Language } from 'src/core/enums/languages.enum';
+import { ReplyUseCases } from 'src/use-cases/reply';
+import { UserUseCases } from 'src/use-cases/user/user.use-case';
+import { Message } from 'telegraf/typings/core/types/typegram';
+
+@Update()
+export class AppUpdate {
+  constructor(
+    private readonly userUseCases: UserUseCases,
+    private readonly replyUseCases: ReplyUseCases,
+  ) {}
+
+  @Start()
+  async onStart(@Ctx() ctx: Context) {
+    // if user does not exist in session, create it
+    if (!ctx.session.user) {
+      ctx.session.user = await this.userUseCases.create({
+        chatId: ctx.chat.id,
+        userId: ctx.from.id,
+      });
+    }
+
+    await this.replyUseCases.start(ctx);
+  }
+
+  @Hears(/🇺🇦|🇬🇧|🇷🇺/)
+  async onUa(@Ctx() ctx: Context) {
+    // convert ctx.message to Message.TextMessage so we can access text property
+    switch ((ctx.message as Message.TextMessage).text) {
+      case '🇺🇦':
+        ctx.session.lang = Language.UA;
+        break;
+      case '🇬🇧':
+        ctx.session.lang = Language.EN;
+        break;
+      case '🇷🇺':
+        ctx.session.lang = Language.RU;
+        break;
+    }
+
+    await this.replyUseCases.langChanged(ctx);
+  }
+
+  @Command('language')
+  async onLanguage(@Ctx() ctx: Context) {
+    await this.replyUseCases.updateLanguage(ctx);
+  }
+
+  @Help()
+  async onHelp(@Ctx() ctx: Context) {
+    await this.replyUseCases.help(ctx);
+  }
+}